Makehuman 1.0.2 Blender tools issues in Blender 2.72b
Problem solved!
The Makehuman sub-folders 'makeclothes', 'makewalk', 'maketarget' must be removed from the folder named Blender Tools before placing them inside Users/user name/Library/Application support/Blender/2.72/scripts/addons.
Any folder inside Blender's Addon folder must have a file named init.py; if it doesn't, Python will ignore the folder.

See this question for details of how Python uses init.py